Pentium 4 3.46 Extreme Edition and 925XE: 1066MHz FSB Support is Here
by Anand Lal Shimpi on October 31, 2004 3:00 PM EST- Posted in
- CPUs
Does it Improve Real World Performance?
There is a convenient convergence point between the 1066MHz FSB and the 800MHz FSB - 3.2GHz. By underclocking our 3.4EE and our 3.46EE to 3.2GHz we managed to put together a nice comparison of the impact of FSB on real world performance, independent of CPU and memory clock speed. Granted, the impact of the 1066MHz FSB will be greater at higher CPU clock speeds, but the impact at 3.2GHz should be able to tell us how much of the 3.46EE's performance advantage is due to its faster FSB.
The table below gives a good indication of the lack of performance improvement due to the 1066MHz FSB today in most applications. With an average performance increase of less than 1%, you shouldn't expect the 1066MHz FSB to do much for Intel at all.
Business/General Use | |||
1066MHz FSB |
800MHz FSB |
Performance Improvement |
|
Business Winstone 2004 | 21.2 |
21.2 |
0.00% |
SYSMark 2004 - Communication | 136 |
136 |
0.00% |
SYSMark 2004 - Document Creation | 201 |
198 |
1.49% |
SYSMark 2004 - Data Analysis | 162 |
161 |
0.62% |
Microsoft Office XP with SP-2 | 511 |
511 |
0.00% |
Mozilla 1.4 | 401 |
405 |
1.00% |
ACD Systems ACDSee PowerPack 5.0 | 593 |
593 |
0.00% |
Ahead Software Nero Express 6.0.0.3 | 543 |
553 |
1.84% |
WinZip Computing WinZip 8.1 | 419 |
431 |
2.86% |
WinRAR | 419 |
413 |
1.43% |
Average Performance Increase | 0.92% |
Under Multitasking Content Creation applications we see that despite the nature of these applications to be more memory bandwidth intensive, the 800MHz FSB simply wasn't a limitation for the Pentium 4 Extreme Edition. Couple that with the fact that with a very large on-die L3 cache, the Extreme Edition needs to fetch data across the FSB much less frequently, it's no surprise that the biggest performance improvement in our Multitasking Content Creation tests was only 1.52%.
Multitasking Content Creation | |||
1066MHz FSB |
800MHz FSB |
Performance Improvement |
|
Content Creation Winstone 2004 | 30.9 |
30.9 |
0.00% |
SYSMark 2004 - 3D Creation | 207 |
204 |
1.45% |
SYSMark 2004 - 2D Creation | 264 |
260 |
1.52% |
SYSMark 2004 - Web Publication | 187 |
185 |
1.07% |
Multitasking: Mozilla and Windows Media Encoder | 596 |
600 |
0.67% |
Average Performance Increase | 0.94% |
There's not much to see in the Video Creation/Photo Editing tests, the 1066MHz FSB does absolutely nothing for performance here.
Video Creation/Photo Editing | ||||
1066MHz FSB |
800MHz FSB |
Performance Improvement |
||
Adobe Photoshop 7.0.1 | 347 |
347 |
0.00%
|
|
Adobe Premiere 6.5 | 533 |
533 |
0.00%
|
|
Roxio VideoWave Movie Creator 1.5 | 289 |
289 |
0.00%
|
|
Average Performance Increase | 0.00% |
In the past, DivX encoding has seen reasonable performance increases due to a faster FSB and increased memory bandwidth. With the move to the 1066MHz FSB we seem to have hit a limit, as there's absolutely no performance improvement here either. It looks like it will take much higher clock speeds for the 1066MHz FSB to make a difference.
Audio/Video Encoding | ||||
1066MHz FSB |
800MHz FSB |
Performance Improvement |
||
MusicMatch Jukebox 7.10 | 434 |
434 |
0.00% |
|
DivX Encoding | 49.9 |
49.9 |
0.00% |
|
XV iD Encoding | 28.7 |
28.5 |
0.70% |
|
Microsoft Windows Media Encoder 9.0 | 2.32 |
2.32 |
0.00% |
|
Average Performance Increase | 0.00% |
Games have also been areas where faster FSB frequencies have benefited Intel,
but once again we see that the average performance increase is less than a
percent. Starwars Battlefront shows the greatest increase in performance at
2.8% due to the 1066MHz FSB.
Gaming | |||
1066MHz FSB |
800MHz FSB |
Performance Improvement |
|
Doom 3 | 86.1 |
85.2 |
1.05% |
Sims 2 | 46 |
46 |
0.00% |
CS: Source | 156.8 |
156.4 |
0.26% |
Halo | 88.4 |
88 |
0.45% |
Far Cry | 133.5 |
132 |
1.12% |
Star Wars Battlefront | 143 |
139 |
2.80% |
Battlefield Vietnam | 239 |
239 |
0.00% |
UT2004 | 59 |
58.6 |
0.68% |
Wolf: ET | 98 |
96.9 |
1.12% |
Warcraft III | 60 |
59 |
1.67% |
Average Performance Increase | 0.91% |
We weren't expecting to see much in the 3D rendering tests and the 1066MHz FSB did not disappoint with only a 0.74% average performance increase here.
3D Rendering | |||
1066MHz FSB |
800MHz FSB |
Performance Improvement |
|
Discreet 3ds max 5.1 (DirectX) | 280 |
282 |
0.71% |
Discreet 3ds max 5.1 (OpenGL) | 339 |
342 |
0.88% |
SPECapc 3dsmax 6 | 1.63 |
1.62 |
0.61% |
Average Performance Increase | 0.74% |
Our final suite of tests are the professional applications tested by SPECviewperf
8. Here we see the largest overall gains provided by the 1066MHz FSB, with
performance improvements approaching 5%, and average performance improvements
approaching 3%. There's very little gain in compiling performance but in the
realm of 3D professional application performance the 1066MHz FSB begins to
show its worth. The gains here will only get better as clock speeds increase,
so maybe the 1066MHz FSB will pay off for those running demanding enough applications
to require a $1000+ 3.46EE CPU.
Professional Apps | |||
1066MHz FSB |
800MHz FSB |
Performance Improvement |
|
SPECviewperf 8 - 3dsmax-03 | 15.99 |
15.99 |
0.00% |
SPECviewperf 8 - catia-01 | 12.62 |
12.08 |
4.28% |
SPECviewperf 8 - light-07 | 12.89 |
12.41 |
3.72% |
SPECviewperf 8 - maya-01 | 12.66 |
12.32 |
2.69% |
SPECviewperf 8 - proe-03 | 15.9 |
15.31 |
3.71% |
SPECviewperf 8 - sw-01 | 12.87 |
12.53 |
2.64% |
SPECviewperf 8 - ugs-04 | 13.71 |
13.1 |
4.45% |
Visual Studio 6 | 16.8 |
16.7 |
0.60% |
Average Performance Increase | 2.76% |
63 Comments
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T8000 - Thursday, November 4, 2004 - link
The most important part of this release is the Intel 925XE chipset, that will allow much higher overclocks because of its 1066 bus support.This is because the 925XE will have the right divider to reach 1066 without any PCI-E overclock.
So with a 925XE mainboard, you can run an Intel 530 CPU at 4Ghz with any PCI-E GPU you choose, because only the CPU will be overclocked and Prescott has excellent chances of reaching 4Ghz with modest water cooling or good air cooling.
Odeen - Wednesday, November 3, 2004 - link
Realtek codec on an Intel board... and here I thought Intel actually made quality motherboards, which entails Sigmatel or Soundmax onboard audio chips.Sigh :(
johnsonx - Wednesday, November 3, 2004 - link
Slim: You're right... my bad. I didn't read every single page. I read the couple of introductory pages, then skipped to the test configuration page, perused a few benches, and then skipped to the conclusion.The measured results of course are no different than I thought they would be...
bob661 - Tuesday, November 2, 2004 - link
We need to have our own review website called www.dontreleasesh!tunlessitsactuallyabetterproductthan theonebeforeit.com.SLIM - Tuesday, November 2, 2004 - link
johnsonx,Anand did isolate the fsb as the sole variable when he DOWNclocked both chips to 3.2ghz (266 x 12 and 200 x 16) on page 3. There was a slight caveat that faster chips would benefit more from a fsb boost. And yes the faster bus increased performance by almost 1% in some tests woohoo!!!
SLIM
johnsonx - Tuesday, November 2, 2004 - link
One thing that might've been interesting to see:Overclock the 3.4EE to 3.46Ghz by OC'ing the FSB to 203Mhz or 204Mhz (812 & 816 respectively). This would completely isolate the effect if the increased clock speed of the 3.46EE, showing only the increased FSB performance... at that point I suspect that the tiny performance gains would completely evaporate.
Mind you, I'm not suggesting this would change the conclusion much, but it would put a big exclamation point to it...
BTW, one does have to wonder why Intel bothered with this. If the 3.46EE/925XE combo is no faster than the 3.4EE/925X combo (I'm assuming the 925X=925XE @800FSB), then why go through all the trouble? Indeed, isn't it true that an 'old' 3.4EE/875 combo is faster still?
Good grief, at least when AMD releases a new top-end chip it is actually measurably faster. Regardless of whether the rating is 'earned' or not, no one can argue that the 4000 isn't (generally) faster than the 3800, nor that the FX-55 isn't faster than any other A64.
Tides - Tuesday, November 2, 2004 - link
Some benchmarks? Hardly. AMD owns in actual games, workstation apps, and half of the other stuff. Not to mention AMD doesn't make you upgrade to ddr2, and AMD cpus are 64bit. Intel's new chips have low shelf lives while the current AMD 64's you buy will last you a lot longer.Performance, realiability, and long lasting.
danidentity - Tuesday, November 2, 2004 - link
IntelUser2000, you couldn't possibly be any more wrong. I will be the first to admit that AMD chips excel above Intel chips in many benchmarks.However:
1. Intel is no where near dead. Calling them so is ridiculous. In Q3 of this year Intel posted revenue of 8.5 billion compared to AMD's 1.2 billion, or SEVEN times as much.
2. AMD is NOT closing "very rapidly" in marketshare. It would appear that way from reading sites and forums like these, but it gives you a false impression. Keep in mind that the largest supplier of PCs on the planet puts Intel chips in every machine. AMD's mobile chips can't compete with the Pentium M in terms of performance and functionality.
3. Intel is not stupid, they have some of the best engineers on the planet. If they seriously thought that AMD was going to topple them as the market leader, or even if they are predicting it, you can GUARANTEE they have something in the works to strike back. They have the means and the money.
4. While many people don't know exactly what clockspeed is, everyone thinks it is the ultimate measure of performance. That mindset will take a LONG time to change, and by then, Intel will have something new.
Most people out there don't even know AMD exists. Just because AMD chips beat Intel chips in some benchmarks posted on technical computer sites, don't mean they're going to topple Intel.
JonahStone - Tuesday, November 2, 2004 - link
Performance is not the only reason why somebody buys a CPU. Although 64 bit might not be available now, does not make it unimportant. Many who buy a computer will keep it for a long time. I do not want to buy a new PC in a year's time to run 64 bit apps. All reviews keep on comparing 32 bit performance and do not even mention the advantage 64 bit will bring. It does matter!!!!!!!IntelUser2000 - Monday, November 1, 2004 - link
Intel is not doing bad. They are doing terrible. So terrible that you might as well call them dead. Probably will last till 2009 before they fill bankruptcy.To those people who say people in forums don't know anything and that there are other people stupid enough to buy Intel chips(I mean all Intel chips): Uhh, yeah, get your head straight, since AMD is closing with Intel very rapidly in marketshare, in server, desktop, and laptop, and that means that gamers actually do make a difference(albeit slowly) making other people buy computers. You think other people will buy P4's because of high clock speed? That's BS, since people who is stupid enough to buy Intel chips don't even know what clock speeds does. There are only a very few that knows computers JUST enough to say clock speed is good.